Irkutsk
Ulan-Ude

Blagoveshchensk
Chita
Yakutsk

Birobidzhan
Vladivostok
Khabarovsk

Magadan
Yuzhno-Sakhalinsk

Anadyr
Petropavlovsk-
Kamchatsky
Moscow

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Aircraft Sukhoi Superjet 100 first in Russia certified by VNAV

The IAC AR issued an Addendum to the Type Certificate for the Sukhoi Superjet 100 aircraft, which allows the use of the VNAV vertical navigation function during all phases of flight.

The Aviation Register of the Interstate Aviation Committee confirmed the possibility of using the VNAV function on the entire fleet of Sukhoi Superjet 100 Basic versions. The use of vertical navigation is possible at all stages of the flight of the Sukhoi Superjet 100, including at airports that have an inaccurate approach procedure.

VNAV, or Vertical Navigation, is an airplane systems function that calculates a vertical flight profile along a given route, which takes into account the aircraft's performance and any speed and altitude restrictions in force on the given route.

The VNAV function advises pilots on maintaining the vertical flight profile during the climbing and cruising phases, and also performs fully automatic control during the descent and approach phases.

Sukhoi Superjet 100 was the first domestic aircraft that passed VNAV certification for all phases of flight.

The presence of the VNAV function on the Sukhoi Superjet 100 aircraft significantly reduces the load on the crew and ensures the exact implementation of all existing restrictions.

“At present, Sukhoi Civil Aircraft CJSC is working on certification of the VNAV function on the Sukhoi Superjet 100 with increased range in the IAC AR. In addition, the company plans to validate the IAC AR certificate for the VNAV function of the Sukhoi Superjet 100 of the basic version and extended range by the European Aviation Safety Agency, EASA, ”said Igor Vinogradov, First Vice President for Quality and Certification.

The tests of the VNAV function on the Sukhoi Superjet 100 aircraft were carried out this summer both at the "Electronic Bird" integration stand designed to test new equipment, software and aircraft systems, and on the prototype 95003 aircraft at the Ramenskoye airfield in Zhukovsky. 58 full-fledged flights were performed on the "Electronic Bird" stand and 24 flights on an experimental aircraft.

During the bench and ground tests, the performance of the VNAV function in all phases of flight was demonstrated: take-off, climb, cruise flight, descent, landing approach, and go-around. The tests also confirmed the accuracy of the specified vertical profile, in accordance with the applicable requirements of AR IAC, EASA and FAA.

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